OTF-1200X-X-85GF 1100°C Ten-Zone High-Pressure Ni-Based Superalloy Tube Furnace with Integrated Pressure and Gas Flow Control
The OTF-1200X-X-85GF is engineered for precise high-pressure thermal treatments requiring stable temperature and pressure control, particularly suited for processing Fe-based superconductive materials and novel oxide ceramics. Its robust Ni-based superalloy tube, measuring 45 mm internal diameter and 2400 mm length, withstands elevated pressures and temperatures up to 1100°C, enabling advanced materials research and development.
This tube furnace incorporates ten independently controlled heating zones, each 150 mm in length, with a combined heating zone length of 1500 mm and a constant temperature zone of 900 mm ±5°C. Temperature is regulated by digital PID controllers with auto-tuning and segment programming, achieving ±1°C accuracy. The furnace supports heating rates up to 10°C/min and controlled cooling rates, ensuring precise thermal profiles.
Key Features
- Ten-zone splitable tube furnace with air cooling and high-quality fibrous insulation for energy efficiency.
- Ni-based superalloy GH747 pressure vessel tube rated for pressures up to 15 MPa at temperatures below 800°C.
- Integrated digital pressure and gas flow control system with dual pressure sensors, mass flow controller (up to 10 MPa, 500 SCCM), and safety pressure relief valves.
- Compatible with inert gases and oxygen; hydrogen or flammable gases are prohibited.
- High-accuracy Omega K-type thermocouples (3 mm OD) with high-temperature connectors, one per heating zone.
- Safety features include thermocouple failure protection, overheating alarms, and torque wrench option to prevent flange bolt over-tightening.
- Recommended circuit breaker rating of 80 amps or higher for the 12 kW power supply (208-240 VAC, single phase).
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | OTF-1200X-X-85GF |
| Maximum Temperature | 1100°C (max 1 hr), 1000°C continuous |
| Heating Zones | 10 zones, 150 mm each, total 1500 mm |
| Constant Temperature Zone | 900 mm ±5°C |
| Temperature Control | Digital PID controllers with auto-tuning, ±1°C accuracy, up to 30 programmable segments |
| Heating Rate | ≤10°C/min (0-200°C), ≤6°C/min (200-700°C), ≤3°C/min (700-900°C), ≤1°C/min (900-1100°C) |
| Cooling Rate | ≤10°C/min (200-800°C), ≤5°C/min (800-1100°C) |
| Thermocouples | 10 Omega K-type, 3 mm OD, high-temp connectors |
| Pressure Vessel Material | Ni-based superalloy GH747 |
| Pressure Vessel Dimensions | OD 85 mm × ID 45 mm × Length 2400 mm |
| Maximum Working Pressure | 15 MPa at <800°C, 10 MPa at <900°C, 6 MPa at <1000°C, 4 MPa at <1100°C |
| Power Supply | 208-240 VAC, 50/60 Hz, single phase, max 12 kW |
| Gas Compatibility | Inert gases and oxygen only; no hydrogen or flammable gases |
| Flanges and Fittings | Two CF type flanges with female 1/4″ NPT fittings; includes 2 copper O-rings |
| Gas Flow Control | High-pressure mass flow controller up to 10 MPa, 500 SCCM max flow; digital pressure sensors and displays |
Typical Applications
Ideal for high-pressure thermal processing in research on Fe-based superconductors, advanced oxide ceramics, and hydroretorting experiments such as shale oil upgrading. The furnace supports controlled atmospheres and precise temperature/pressure profiles essential for these applications.
Configuration & Operating Notes
Samples must be placed inside crucibles or isolated with foil to prevent direct contact with the Ni-based tube alloy. The furnace is not suitable for hydrogen or flammable gases. A two-stage pressure regulator is required on gas cylinders to limit pressure below 3 PSI for safety. Optional torque wrenches help prevent flange bolt over-tightening. Overpressure safety valves and thermocouple failure protections are integrated to enhance operational safety.
